Something melted my wetsuit

[BaNZ]

I don't know what it is. The surface is crusty and it looks like it distingrate it.

[Lebowski]

Is that the inside of a knee? Looks like abrasion wear to me. Do you use your knee to duckdive?

[BaNZ]

It's on the arm this is why I think something melted it. It's not on my elbow. Just in the middle of the arm. When I look inside, it looks like it was burnt or melted.

I put my hand underneath to push it out hence why it looks like it's on the knee.

[dtc]

some oils, petrol and many solvents (esp acetone) can 'dissolve' neoprene. And some other chemicals - maybe it just got dropped into something when you didnt notice, some petrol on the ground in the carpark or something?

not sure what you can do about it - I guess you could get a very thin sheet of neoprene and glue or stitch it it over the area, if its causing a rash

[waikikikichan]

Urine is acidic.

[jaffa1949]

Urine is acidic.

BaNZ is pissing on his elbow? Have you used Vaseline to slide into your wet suit?
Beyond that I ask no further questions!

[billie_morini]

Urine is acidic.

No, only sometimes. pH in human urine in healthy people ranges from 4.5 to 8.0.
(Can't fool a chemist, Waiki).